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Paper: The Visible Broadband Imager: The Sun at High Spatial and Temporal Resolution
Volume: 463, 2nd ATST-EAST Workshop in Solar Physics: Magnetic Fields from the Photosphere to the Corona
Page: 431
Authors: Wöger, F.; McBride, W.; Ferayorni, A.; Gregory, S.; Hegwer, S.; Tritschler, A.; Uitenbroek, H.
Abstract: The Visible Broadband Imager (VBI) will be the primary first-light instrument for the Advanced Technology Solar Telescope (ATST). It is designed to observe the solar atmosphere at heights ranging from the photosphere to chromosphere. High frame-rate detectors that sample the FOV of up to 2.8 arcmin in diameter critically at the diffraction limit of ATST's 4 meter aperture will provide near real-time speckle reconstruction imaging. With its focus on high-spatial resolution, the VBI will be addressing scientific questions related to the smallest structures visible in the solar atmosphere with high photometric precision. The capability to observe the solar atmosphere with a cadence of about 3 seconds per reconstructed image will enable the VBI to temporally resolve fast evolving structures. In this contribution we present the major aspects of the current design of the VBI and highlight some scientific questions related to fast evolving, small-scale features within the solar atmosphere that the VBI will address.
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